Spherical saw blade



FIG. 1 is a perspective view of the spherical saw blade;

FIG. 2 is another perspective view of the spherical saw blade;

FIG. 3 is a side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a back view thereof; and,

FIG. 6 is a view showing spherical saw blade in an environment of use.

The dot-dash-dot lines in the drawings illustrate portions of the spherical saw blade which form no part of the claimed design. 

CLAIM The ornamental design for a spherical saw blade, as shown and described. 